Obsidian beadwork from Nagano and Hokkaido represents a meaningful convergence of geology, history, and contemporary craft. Emerging from prehistoric mining sites like Hoshikuso Pass and Shirataki, obsidian—once used for sharp tools—now finds expression as polished beads in jewelry. These pieces are celebrated for their deep sheen, tactile elegance, and spiritual qualities, while also preserving connections to Japan’s ancient obsidian trade and cultural legacy.